package com.zzyl.nursing.service.impl;

import cn.hutool.core.io.IoUtil;
import cn.hutool.core.util.IdcardUtil;
import com.alibaba.fastjson2.JSON;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.zzyl.common.constant.CacheConstants;
import com.zzyl.common.exception.base.BaseException;
import com.zzyl.common.utils.StringUtils;
import com.zzyl.framework.ai.AiInvoker;
import com.zzyl.nursing.domain.HealthAssessment;
import com.zzyl.nursing.dto.HealthAssessmentDto;
import com.zzyl.nursing.mapper.HealthAssessmentMapper;
import com.zzyl.nursing.service.IHealthAssessmentService;
import com.zzyl.nursing.vo.HealthReportVo;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.io.InputStream;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;
import java.util.Arrays;
import java.util.List;

/**
 * 健康评估Service业务层处理
 *
 * @author mr.wu
 * @date 2025-05-20
 */
@Service
public class HealthAssessmentServiceImpl extends ServiceImpl<HealthAssessmentMapper, HealthAssessment> implements IHealthAssessmentService
{
    @Autowired
    private HealthAssessmentMapper healthAssessmentMapper;

    /**
     * 查询健康评估
     *
     * @param id 健康评估主键
     * @return 健康评估
     */
    @Override
    public HealthAssessment selectHealthAssessmentById(Long id)
    {
        return getById(id);
    }

    /**
     * 查询健康评估列表
     *
     * @param healthAssessment 健康评估
     * @return 健康评估
     */
    @Override
    public List<HealthAssessment> selectHealthAssessmentList(HealthAssessment healthAssessment)
    {
        return healthAssessmentMapper.selectHealthAssessmentList(healthAssessment);
    }

    @Autowired
    private StringRedisTemplate redisTemplate;

    @Autowired
    private AiInvoker aiInvoker;


    /**
     * 新增健康评估
     *
     * @param dto 健康评估
     * @return 结果
     */
    @Transactional(rollbackFor = Exception.class)
    @Override
    public long insertHealthAssessment(HealthAssessmentDto dto)
    {
        //0. 校验参数
        if(StringUtils.isBlank(dto.getElderName()) || "null".equals(dto.getElderName())) {
            throw new BaseException("姓名参数非法");
        }

        if(StringUtils.isBlank(dto.getIdCard()) || "null".equals(dto.getIdCard())) {
            throw new BaseException("身份证号参数非法");
        }

        if(StringUtils.isBlank(dto.getPhysicalExamInstitution()) || "null".equals(dto.getPhysicalExamInstitution())) {
            throw new BaseException("体检机构参数非法");
        }

        if(StringUtils.isBlank(dto.getPhysicalReportUrl()) || "null".equals(dto.getPhysicalReportUrl())) {
            throw new BaseException("体检报告URL参数非法");
        }

        //1. 从Redis中读取体检报告PDF内容
        String pdfText = (String) redisTemplate.opsForHash().get(CacheConstants.HEALTH_ASSESSMENT_TEXT_KEY, dto.getIdCard());
        if(StringUtils.isBlank(pdfText)) {
            throw new BaseException("未上传体检报告PDF文件");
        }

        //2. 从resources下读取prompt.txt中模板内容
        InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("prompt.txt");
        String template = IoUtil.read(inputStream, StandardCharsets.UTF_8);

        //3. 组织prompt提示词
        String prompt = template.replace("prompt",pdfText);

        //4. 调用百度千帆大模型单轮对话API接口，获取JSON结果
        String resultJSON = aiInvoker.invokeQianFanChat(prompt);
        if(StringUtils.isBlank(resultJSON)) {
            throw new BaseException("调用千帆大模型接口失败");
        }

        //5. 解析JSON字符串为HealthReportVo对象
        HealthReportVo healthReportVo = JSON.parseObject(resultJSON, HealthReportVo.class);

        //6. 新增健康评估表数据
        long id = saveHealthAssessment(dto, healthReportVo);

        //7. 从Redis中删除体检报告PDF内容
        redisTemplate.opsForHash().delete(CacheConstants.HEALTH_ASSESSMENT_TEXT_KEY, dto.getIdCard());

        //8. 返回表的主键ID值
        return id;
    }

    /**
     * 新增健康评估表数据
     * @param dto
     * @param healthReportVo
     * @return
     */
    private long saveHealthAssessment(HealthAssessmentDto dto, HealthReportVo healthReportVo) {
        HealthAssessment assessment = new HealthAssessment();
        assessment.setElderName(dto.getElderName());//老人姓名
        assessment.setIdCard(dto.getIdCard());//身份证号
        assessment.setPhysicalExamInstitution(dto.getPhysicalExamInstitution());//体检机构
        assessment.setPhysicalReportUrl(dto.getPhysicalReportUrl());//体检报告URL链接
        assessment.setBirthDate(IdcardUtil.getBirthDate(dto.getIdCard()).toLocalDateTime());//出生日期
        assessment.setAge(IdcardUtil.getAgeByIdCard(dto.getIdCard()));//年龄
        assessment.setGender(IdcardUtil.getGenderByIdCard(dto.getIdCard()));//性别（0，男 1：女）
        double healthScore = healthReportVo.getHealthAssessment().getHealthIndex();//健康评分（来自于AI结果）
        assessment.setHealthScore(String.valueOf(healthScore));
        assessment.setTotalCheckDate(healthReportVo.getTotalCheckDate());//总检日期（来自于AI结果）
        assessment.setRiskLevel(healthReportVo.getHealthAssessment().getRiskLevel());//危险等级（来自于AI结果）
        assessment.setReportSummary(healthReportVo.getSummarize());//报告总结（来自于AI结果）
        assessment.setDiseaseRisk(JSON.toJSONString(healthReportVo.getRiskDistribution()));//疾病风险-JSON格式（来自于AI结果）
        assessment.setAbnormalAnalysis(JSON.toJSONString(healthReportVo.getAbnormalData()));//异常分析-JSON格式（来自于AI结果）
        assessment.setSystemScore(JSON.toJSONString(healthReportVo.getSystemScore()));//8大健康系统分值-JSON格式（来自于AI结果）
        assessment.setSuggestionForAdmission(healthScore>=60?0:1);//是否建议入住（0：建议  1：不建议）
        assessment.setNursingLevelName(getNursingLevelName(healthScore));//推荐的护理等级
        assessment.setAdmissionStatus(1);//入住情况（0-已入住，1-未入住）
        assessment.setAssessmentTime(LocalDateTime.now());//评估时间
        boolean result = this.save(assessment);
        if(!result) {
            throw new BaseException("新增健康评估数据失败");
        }
        return assessment.getId();
    }

    /**
     * 根据健康评分获取建议的护理等级
     * @param healthScore
     * @return
     */
    private String getNursingLevelName(double healthScore) {
        String levelName = "不建议入住";
        if(healthScore<0||healthScore>100) {
            throw new BaseException("健康评分分值区间非法");
        }
        if(healthScore>=90) {
            levelName = "三级护理";
        } else if(healthScore>=80){
            levelName = "二级护理";
        } else if(healthScore>=70) {
            levelName = "一级护理";
        } else if(healthScore>=60){
            levelName = "特级护理";
        }
        return levelName;
    }

    /**
     * 修改健康评估
     * 
     * @param healthAssessment 健康评估
     * @return 结果
     */
    @Override
    public int updateHealthAssessment(HealthAssessment healthAssessment)
    {
        return updateById(healthAssessment) ? 1 : 0;
    }

    /**
     * 批量删除健康评估
     * 
     * @param ids 需要删除的健康评估主键
     * @return 结果
     */
    @Override
    public int deleteHealthAssessmentByIds(Long[] ids)
    {
        return removeByIds(Arrays.asList(ids)) ? 1 : 0;
    }

    /**
     * 删除健康评估信息
     * 
     * @param id 健康评估主键
     * @return 结果
     */
    @Override
    public int deleteHealthAssessmentById(Long id)
    {
        return removeById(id) ? 1 : 0;
    }
}
